X | ÷ | 131 | − | ( | 100 | − | X | ) | ÷ | 1000 | = | 64 125 |
方程左边 = | 1 131 | X | − | 100 | × | 1 1000 | + | X | × | 1 1000 |
= | 1 131 | X | − | 1 10 | + | X | × | 1 1000 |
= | 1131 131000 | X | − | 1 10 |
1131 131000 | X | − | 1 10 | = | 64 125 |
1131 131000 | X | = | 64 125 | + | 1 10 |
1131 131000 | X | = | 153 250 |
X | = | 153 250 | ÷ | 1131 131000 |
= | 153 250 | × | 131000 1131 |
= | 51 | × | 524 377 |
X | = | 26724 377 |
X | = | 70.885942 |